The Heist 6 is a great little entry level multi tool. It has the basics that you will need to keep your ride going. list: 3mm, 4mm, 5mm, 6mm hex keys, torx T25 and Philips Screwdriver. And
at this price you can't go wrong.
Great entry tool with 10 of the most common used tools for on the road adjustments
Price $ 19.95
This tool has just about everything that you need, including a chain breaker.